I **NEVER** measure by cups. Oooohhhhhhh so messy and not necessary.Each brand of mix and each flavor yields a different amount. I don't remember exactly any more but something like: banana cake mix might measure only 3 1/2 cups batter while chocolate gives 4 1/4 cups yet each bakes up perfectly in that same 10x2 round pan. (My #s and flavors might not be exact -- just an example) It is much easier to learn how much your pan holds. Saves time! NO clean up of extra equipment or loss of batter left in a measuring cup!